| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-416,TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE OVERALL OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| CQFM |
HARDNESS RATING |
78.0 ROCKWELL SUPERFICIAL 15-N MINIMUM OVERALL AND 84.0 ROCKWELL SUPERFICIAL 15-N MAXIMUM OVERALL |
| AASA |
THREAD LENGTH |
1.000 INCHES MINIMUM AND 1.080 INCHES MAXIMUM |
| AASU |
HEAD HEIGHT |
0.250 INCHES MINIMUM AND 0.280 INCHES MAXIMUM |
| CWYB |
SHOULDER SHAPE |
ROUND FIRST SHOULDER |
| MATT |
MATERIAL |
STEEL COMP 4135 OVERALL OR STEEL COMP 4137 OVERALL OR STEEL COMP 5135 OVERALL OR STEEL COMP 5140 OVERALL OR STEEL COMP 8640 OVERALL OR STEEL COMP 4140 OVERALL OR STEEL COMP 8637 OVERALL OR STEEL COMP 8740 OVERALL |
| AAJF |
THREAD DIRECTION |
LEFT-HAND |
| AATX |
SHOULDER LENGTH |
1.040 INCHES MINIMUM FIRST SHOULDER AND 1.060 INCHES MAXIMUM FIRST SHOULDER |
| AASK |
HEAD STYLE |
DEE CHAMFER |
| THSD |
THREAD SERIES DESIGNATOR |
UNF |
| CMLP |
THREAD QUANTITY PER INCH |
16 |
| AASY |
DISTANCE FROM CENTERLINE TO FLAT |
0.445 INCHES NOMINAL |
| AAJD |
THREAD CLASS |
2A |
| SFTT |
SURFACE TREATMENT |
CADMIUM OVERALL AND CHROMATE OVERALL OR ZINC OVERALL |
| AHYM |
NOMINAL THREAD DIAMETER |
0.750 INCHES |
| AASB |
FASTENER LENGTH |
2.220 INCHES MINIMUM AND 2.280 INCHES MAXIMUM |
| AATN |
SHOULDER DIAMETER |
0.876 INCHES MINIMUM FIRST SHOULDER AND 0.879 INCHES MAXIMUM FIRST SHOULDER |
| AASL |
HEAD DIAMETER |
1.310 INCHES MINIMUM AND 1.370 INCHES MAXIMUM |